Strip for roadways



Patented Apr. 26, 1927.

UNITED vSTATES PATENT OFFICE.'-

WILLIAM E. WHITE, oF CHICAGO, ILLINoIs, AssIGNoE To KALMAN STEEL coMrAN'Y,

oE CHICAGO, ILLINoIs, A CORPORATION or DELAWARE sTEIP Eon noALwAYs.

Application led February, 1926. lSerial No. 86,831. i

. My invention relates to monolithic road construction, and particularly to a novel parting strip for use in such roads.

It is customary in the construction of concrete roadways to imbed metallic strips continuously along the center line of the road, the function of the strip being well understood. Such strips are made up of successive strip sections, each of consider- `able length,.usually about 15 feet, and the ends are commonly overlapped and held in .desired position by stakes.

However, a construction in which the strips are overlapped is objectionable in some. States where the requirement is made that the plastic concrete be routed out adjacent to the top of the strip, a suitable tool Ibeing employed that straddles and rides on the upper margin of the sthip. An object of this invention is, therefore, to provide means for accurately positioning and holding the adjacent ends of the strips by interlocking telescopingxengagement. l

A construction such as described has another advantage; the extreme end of a strip may be firmly held in position by means of .a stake at that end and an extension strip may be applied thereto at the proper time without disturbing the holding stake previously driven. This is not possible where overlapping of the strip is practiced. u

The strips are, as stated, relatively long and flexible, and asa means for facilitating the registry of the ends of the twostrips, I construct the upper and lower tongues of the interlock of greater length than the in-v termediate tongue. This feature, in conj nection with the V-shaped chaniel construc- 'tion of the strip, insures a ready inter-engagement of the parts.

The invention will be morereadily understood by reference to the accompanying drawing, in which;

Fig. 1 is a side elevation of a. stripv sec'- tion; constructed in accordance with my invention;

Fig. 2 is an enlarged fragmentary 5 lside elevation of an end thereof;

Fig. 3 is an end view; v

Fig. 4 is a top l lan vlev'v, and l Fig. 5 is a simi ar view of two strip sections in interlocking enga ement; Thev improvement soug t toabe covered herein relates to the means employed forA eff strip sections in exact alignment. The improvfement is preferably applied to a strip tions, and to this end I provide` at one end only of each section, a plurality of tongues, 14, 15, 16, preferably formed as, integral extensions from the webs constituting the strip. In the form shown, the tongues are alternately laterally deflected on opposite sides of the plane of the material from which the tongues are projected, the tongues 14 16, being in the same alignment while the tongue 15 is on the opposite side. The extent of deection is equal to the thickness of the material of the strip. The tongue 14, is formed as an extension of the webs, 10, 12, of the channel, being terminated short of the top edge of the strip in order that an ample depth of single thickness material is provided at the joint. This permits the continuous travel of the linishing tool over the joint. This is not essential to the bottom edge and therefore the tongue 16, is formed as an extension of a part of the web, 13 and of the entire web, v11. The tongue, 15, is A formed asgan extension of both the webs, 12, 13, and is, therefore, V- shaped in end elevation. f As shown the ends, 17, 18,.'19, of the tongues, are bevelled outwardly, andthe center tongue is shorter let than the upper and lower tongues in order to assist in effecting the end to end inter-1 locking abutting engagement of the sections. The holes, l20, rovided inthe channel ortion arev for t e reception of the holding stakes, and it will be noted that 'a stake` may without lessening the substantial advantages resulting from the employment of the disclosed principles, and I do not wish to be limited except as indicated in the appended claims.

I claim:

1. A road strip of channel form and a A plurality of tongues projectingl from the end of the stri said tongues ing alternately deflectedp oppositely ror'n theV body of the strip, the upper of said tongues being below the top edge of the strip.

'2. A road strip of channel form and a plurality of tongues formed as` an extension of the channel portion of the strip, said tongues being alternately displaced laterally into planes on opposite sides of the plane of the material from which the are displaced the upper of said tongues eing located a substantial distance below the top edge of the strip.

3. A road strip having a V-sl1aped lonitudinal channel, and tongues extending rom the channel portion at one-end, one tongue being provided at each angle ofthe "V, said tongues being alternately displaced on 'opposite sides of the plane of the body of materialcomposing the channel, the upper tongue being below the upper edge of the strip and the lower tongue extending to the bottom of the strip.

In testimony whereof I have aixed my signature. i l

\ WILLIAM E. WHITE. 

